/*
 * Copyright 2009 castLabs GmbH, Berlin
 *
 * Licensed under the Apache License, Version 2.0 (the License);
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an AS IS BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.coremedia.iso.boxes;

import com.coremedia.iso.IsoTypeReader;
import com.coremedia.iso.IsoTypeWriter;
import com.googlecode.mp4parser.AbstractFullBox;

import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;

/**
 * aligned(8) class SampleDependencyTypeBox extends FullBox('sdtp', version = 0, 0) { for (i=0; i <
 * sample_count; i++){ unsigned int(2) reserved = 0; unsigned int(2) sample_depends_on; unsigned
 * int(2) sample_is_depended_on; unsigned int(2) sample_has_redundancy; } }
 */
public class SampleDependencyTypeBox extends AbstractFullBox {
  public static final String TYPE = "sdtp";

  private List<Entry> entries = new ArrayList<Entry>();

  public static class Entry {

    public Entry(int value) {
      this.value = value;
    }

    private int value;


    public int getReserved() {
      return (value >> 6) & 0x03;
    }

    public void setReserved(int res) {
      value = (res & 0x03) << 6 | value & 0x3f;
    }

    public int getSampleDependsOn() {
      return (value >> 4) & 0x03;
    }

    public void setSampleDependsOn(int sdo) {
      value = (sdo & 0x03) << 4 | value & 0xcf;
    }

    public int getSampleIsDependentOn() {
      return (value >> 2) & 0x03;
    }

    public void setSampleIsDependentOn(int sido) {
      value = (sido & 0x03) << 2 | value & 0xf3;
    }

    public int getSampleHasRedundancy() {
      return value & 0x03;
    }

    public void setSampleHasRedundancy(int shr) {
      value = shr & 0x03 | value & 0xfc;
    }

    @Override
    public String toString() {
      return "Entry{" +
          "reserved=" + getReserved() +
          ", sampleDependsOn=" + getSampleDependsOn() +
          ", sampleIsDependentOn=" + getSampleIsDependentOn() +
          ", sampleHasRedundancy=" + getSampleHasRedundancy() +
          '}';
    }
  }

  public SampleDependencyTypeBox() {
    super(TYPE);
  }

  @Override
  protected long getContentSize() {
    return 4 + entries.size();
  }

  @Override
  protected void getContent(ByteBuffer byteBuffer) {
    writeVersionAndFlags(byteBuffer);
    for (Entry entry : entries) {
      IsoTypeWriter.writeUInt8(byteBuffer, entry.value);
    }
  }

  @Override
  public void _parseDetails(ByteBuffer content) {
    parseVersionAndFlags(content);
    while (content.remaining() > 0) {
      entries.add(new Entry(IsoTypeReader.readUInt8(content)));
    }
  }

  public List<Entry> getEntries() {
    return entries;
  }

  public void setEntries(List<Entry> entries) {
    this.entries = entries;
  }

  @Override
  public String toString() {
    final StringBuilder sb = new StringBuilder();
    sb.append("SampleDependencyTypeBox");
    sb.append("{entries=").append(entries);
    sb.append('}');
    return sb.toString();
  }
}
